RENE DESCARTES (1952). “RULES FOR THE DIRECTION OF THE MIND DISCOURSE ON THE METHOD MEDITATIONS ON FIRST PHILOSOPHY OBJECTIONS AGAINST THE MEDITATIONS AND REPLIES THE GEOMETRY”
John Henninger Reagan's speech (January 15, 1861), as quoted in the Congressional Globe, 36th Congress, 2nd Session (p. 391); also quoted in Kenneth M. Stampp "The Causes of the Civil War" (p. 89), 1959.